Available in Europe for some time now, the FlatOut: Ultimate Carnage demo has finally arrived on the U.S. and Canadian Xbox Live Marketplace. Previously, we were impressed with video footage from the game, so it will be nice to finally give it a test drive. FlatOut, if you don't know (or haven't guessed from the Ultimate Carnage subtitle), is a particularly violent racing game, full of death and destruction. Go fire up the old Xbox and give it a go. If you like what you see, expect the retail version to hit the shelves next month.